What phase of the Software design cycle does this document represent? Are there any preconditions and postconditions presented here? If so what are they?

This is a design for a class named Box whose dimensions are integers and private to the class. The dimensions are labeled: length l, breadth b, and height h.

The default constructor of the class should initialize l, b, and h to 0.

The parameterized constructor Box(int length, int breadth, int height) should initialize Box's l,b and h to length, breadth and height.

The copy constructor Box(Box B) should set l,b and h to B's l,b and h, respectively.

Every constructor should increment the global variable BoxesCreated.

The destructor should increment the global variable BoxesDestroyed.

Apart from the constructor and destructor, the class should have 4 functions:

int getLength() - Return box's length

int getBreadth() - Return box's breadth

int getHeight() - Return box's height

long long CalculateVolume() - Return the volume of the box

Overload the operator '<' for the class Box. "Box A < Box B" if:

A.l < B.l

A.b < B.b and A.l==B.l

A.h < B.h and A.b==B.b and A.l==B.l

Overload operator << for the class Box().

If B is an object of class Box:

cout<

Constraints

0 {l,b,h } 10^5

Two boxes being compared using the < operator will not have all three dimensions equal